#include<stdio.h>
int f(int a);
int main()
{
    int s[8]={1,2,3,4,5,6},i,d=0;
    for(i=0;f(s[i]);i++)
    d+=s[i];
    printf("%d\n",d);
    return 0;
}
    int f(int a)
    {
        return a%2;
    }